A Large-Area Patterned Hydrogen-Bonded Organic Framework Electrochromic Film and Device,Small

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A Large-Area Patterned Hydrogen-Bonded Organic Framework Electrochromic Film and Device
Small ( IF 13.0 ) Pub Date : 2023-07-04 , DOI: 10.1002/smll.202304691
Jifei Feng ₁ , Yi Luo ₁ , Xinyi Wang ₁ , Guofa Cai ₁ , Rong Cao ₂

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Fabrication of a patterned hydrogen-bonded organic framework (HOF) films on a large scale is an extreme challenge. In this work, a large area HOF film (30 × 30 cm²) is prepared via an efficient and low-cost electrostatic spray deposition (ESD) approach on the un-modified conductive substrates directly. Combining the ESD with a template method, variously patterned HOF films can be easily produced, including deer- and horse-shaped films. The obtained films exhibit excellent electrochromic performance with multicolor change from yellow to green and violet, and two-band regulation at 550 and 830 nm. Benefiting from the inherently present channels of HOF materials and the additional film porosity created by ESD, the PFC-1 film could quickly change color (within 10 s). Furthermore, the large-area patterned EC device is constructed based on the above film to prove practical potential application. The presented ESD method can be extended to other HOF materials; thus, this work paves a feasible path for constructing large-area patterned HOF films for practical optoelectronic applications.

中文翻译：

大面积图案化氢键有机骨架电致变色薄膜及器件

大规模制造图案化氢键有机骨架（HOF）薄膜是一项巨大的挑战。在这项工作中，通过高效且低成本的静电喷涂沉积（ESD）方法直接在未改性的导电基板上制备大面积HOF薄膜（30×30cm ^{2 ）。}将ESD与模板法相结合，可以轻松生产各种图案的HOF薄膜，包括鹿形和马形薄膜。所得薄膜表现出优异的电致变色性能，具有从黄色到绿色和紫色的多色变化，以及550和830 nm的双波段调节。受益于 HOF 材料固有的通道和 ESD 产生的额外薄膜孔隙，PFC-1 薄膜可以快速变色（10 秒内）。此外，基于上述薄膜构建了大面积图案化EC器件，证明了其实际应用潜力。所提出的 ESD 方法可以扩展到其他 HOF 材料；因此，这项工作为构建用于实际光电应用的大面积图案化 HOF 薄膜铺平了一条可行的道路。

更新日期：2023-07-04

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